3.8.3 Setting of DSCP rewrite

The following describes the configuration when the DSCP is to be updated for certain types of flows.

Points to note

When frames are received, first flow detection is performed based on the destination IP address, and then the DSCP value is updated.

Command examples

1. (config)# ip qos-flow-list QOS-LIST3

   Creates a IPv4 QoS flow list (QOS-LIST3). By creating this list, IPv4 QoS flow list mode is entered.

2. (config-ip-qos)# qos ip any host 192.168.100.10 action replace-dscp 63

   Configures the IPv4 QoS flow list for destination IP 192.168.100.10, and then sets that the DSCP value is to be updated to 63.

3. (config-ip-qos)# exit

   Returns to global configuration mode from IPv4 QoS flow list mode.

4. (config)# interface gigabitethernet 1/0/3

   Switches to the interface mode of port 1/0/3.

5. (config-if)# ip qos-flow-group QOS-LIST3 in

   Enables the IPv4 QoS flow list (QOS-LIST3) on the receiving side.